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What is the default margin of Support CardView so I can define margin for my situation?
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
card_view:cardUseCompatPadding="true"
card_view:cardCornerRadius="4dp"
card_view:cardElevation="2dp">
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CardView was introduced in Material Design in API level 21 (Android 5.0 i.e Lollipop). CardView uses elevation property on Lollipop for shadows and falls back to a custom emulated shadow implementation on older platforms. This new widget is a big step for displaying data/information inside cards.
In order to use the `CardView` you need to add it to your layout file. Use it as a view group to contain other views. In this example, the `CardView` contains a single TextView to display some information to the user.
These cards have a default elevation above their containing view group, so the system draws shadows below them. Cards provide an easy way to contain a group of views while providing a consistent style for the container. Figure 1. Card examples
The system provides the CardView API as an easy way for you to show information inside cards that have a consistent look across the platform. These cards have a default elevation above their containing view group, so the system draws shadows below them.
I also came up with the same problem. It didn't work even though I added android:layout_marginBottom .
But I found the solution.
Your CardView should be inside the RelativeLayout. Then android:layout_marginBottom and android:layout_marginTop will work as expected.
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How to define margin of CardView?
Use attribute android:layout_marginLeft, android:layout_marginRight, android:layout_marginTop and android:layout_marginBottom to define CardView margins.
What is the default margin of Support CardView?
Here is the CardView Documentation. Also see the Design Guidelines.
FYI, Use attribute card_view:cardUseCompatPadding="false" to remove inner padding inside CardView.
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